Kindle board with LED lights

Kindle board

Built myself a Kindle board from aluminium with LED lighting. Most of the parts are from our local electronics junkyard. The aluminium sheet is the casing of an old LCD, battery holder comes from a casette player, the lamp shades are two fifths of a PET bottle's bottom part. The batteries and the LEDs with resistors I had to buy.
The LEDs work with 3.3Volts and 25mA. Three batteries provide 4.5V. 68 Ohm resistors were included with the LEDs. Although 56 Ohm res. would have sufficed. The last picture shows the LED wizard on linear1.org. I got the layout and wiring from there before I started soldering.
The bubbles are there because I put a protective foil on my Kindle's screen after I managed to put a somewhat big scratch on the display.